Bobbin-holder for shuttles



S. R. LIBERTY.

BOBBIN HOLDER FOR SHUTTLES.

APPLICATION FILED 050,9. 1920.

1,393,145, I Patented 0011. 11, 1921.

1 W M 1 i4 77 w Wit Fm. 4. j ATT' YS.

SAUL R. LIBERTY, OF PAWTUCKET, RHODE ISLAND, ASSIGNOR TO THE LIBERTY COMPANY, OF PAWTUCKET, RHODE ISLAND.

BOBBIN-HOLDER FOR SHUTTLES.

Application filed December 9, 1920.

To all whom it may concern:

Be it known that I, SAUL R. LIBERTY, a citizen of the United States residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented new and useful Improvements in a Bobbin- Holder for Shuttles, of which the following is a specification.

This invention relates to certain new and useful improvements in a bobbin holder for shuttles, and it has for its object to provide simple means for' effectively securing the bobbin in its shuttle recess and which will automatically release the bobbin from its mounting upon lifting the same therefrom.

The invention consists principally of a pair of clamping arms for normally engaging the bobbin when operatively disposed, with fixed means interposed in the path of the arms, when the bobbin is raised from its recess in the shuttle, to effect separation of the arms and releasement of the bobbin by and during movement thereof.

Further, the invention resides in the features of construction and the arrangements and combinations of parts hereinafter described and claimed, reference being had to the accompanying drawing wherein- Figure 1 is a longitudinal section through one end of a shuttle embodying the improvements and depicting the bobbin securing means in its operative position;

F 2 is a similar section illustrating the bobbin securing means rendered inoperative, or in its bobbin releasing position;

Fig. 3 is a horizontal section showing the present invention in top plan; and

Fig. 4 is a fragmental, longitudinal section through a modified form of the invention. 1

Referring more in particular to the drawing, the shuttle 1 is provided with the bobbin recess or cavity 2 in one end of which the bobbin spindle 3 is pivoted, as at 4:, for swinging upwardly out of the cavity for removal or renewal of a bobbin 5. The bobbin is equipped at its base with an enlargement 6 separated from the bobbin body by thetneck groove 7 in which latter the inturned ends 8 of the bobbin gripping arms 9 are designed to engage and thereby retain the bobbin on its spindle against lengthwise displacement.

The bobbin gripping arms preferably are n egr lly connected in the form of a U- Specification of Letters Patent.

Seria1 No. 429,383.

shaped yoke of spring metal, the connecting .bend engaging about the pivoted end of the spindle and positioned thereon by the lugs 15 passing through notches formed in the lower gripping arm 9 and the arms extending above and below, alongside of the latter, and the enlargement 6, with their terminals embracing the neck of the bobbin. A pair of rods or abutments l0 and 11 extend transversely across the bobbin recess 2 above and below the pivot 4, the upper abutment 10 being disposed rearwardly of, and the lower abutment 11 being disposed forwardly of the vertical plane including the pivot whereby when the spindle is lifted from its recess the lower gripping arm will engage its abutment 11 and be arrested thereby, while the spindle is continued in its upward movement. The upper arm 9 is formed with a cam depression immediately in advance of the abutment 10 and effects a disengagement of the arm from the bobbin. Thus, lifting the bobbin or spindle will effect separation of the gripping arms and releasement of the bobbin, and upon swinging the spindle back into the shuttle cavity the gripping arms will be returned to normal position through their inherent resiliency.

As a means for returning the spindle to its operative position, a leaf spring or resilient support 13 is secured in the under side of the shuttle, as by fastener 14:, so as to underlie the pivoted end of the spindle from which depends a pair of bearing lugs or feet 15 which pass through notches formed in the sides of the lower gripping arm and are disposed rearwardly of the pivot a and movable to either side of dead center against the tension of the spring 18. Obviously, the spring will bear upwardly on the bearing lug in both positions to hold the spindle in its respective position, either operative or inoperative.

In the modified form of the invention the leaf spring 13 is replaced by a lever 20 fulcrumed between its ends on pivot 16 and has one end underlying the bearings 15 and its opposite end cushioned by and under lying a coiled spring 17, the latter being arranged in a vertical bore or chamber 18 in the shuttle body and backed by an adjustable plug 19.

The construction is exceedingly economical, consisting of a U-shaped resilient memlee a pa r of abutments which may readily Patented Oct. 11, 1921/ 'ing be driven through the sides of the shuttle between the gripping arms, and a tensiondevice for returning the bobbin or spindle to its cavity. Merely lifting the spin- 7 dle releases the bpbbin, by and during such lifting, and lowering the bobbin effects a re'e'ngagement thereof.

' Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

- 1. A shuttle having a bobbin recess, a spindle pivoted at one end therein, a U- shaped member secured about the pivoted end of the spindle with its arms extending spindle pivoted therein, a pair of connected 'yiel'dable arms carried on the pivoted end of the spindle for engaging a bobbin, and means above and below the pivoted end of the spindlefor rendering the yieldable arms inoperative by and during movement of the spindle from the recess.

3. A shuttle having a bobbin recess, a spindle pivoted at one end within the recess, a pair ofbobbin gripping arms yieldably mounted on the pivoted end of the spindle, an abutment interposed between the spindle and each arm for engaging thelatter on movement of the spindle to render the same inoperative, and cam means provided on one arm for ridingon the respective abutment to render the arm inoperative upon movement ofthe spindle.

i. A shuttle having a bobbin recess, a spindle pivoted at one end within the re eess, a pair of resilient bobbin gripping arms mounted on opposite sides of the pivoted end of the spindle, the arms on the side toward which the spindle is moved from the recess being provided with an inwardly facing cam portion disposed rearwardly of the pivoted mounting of the spindle, and means for rendering the specified arm inoperative upon movement of the spindle from its recess, said means being engageable by the cam portion of said arm to effect such inoperative disposal thereof.

5. In a shuttle, a spindle pivoted for movement to and from the shuttle recess, a pair of arms carried by the pivoted end of the spindle and extending alongside the lat ter for releasably engaging the bobbin carried thereby, one arm being depressed rearwardly of the spindle pivot to form a cam, an abutment disposed rearwardly of said pivot to be engaged by the cam for disengaging the arm from the bobbin, and a'second abutment disposed forwardl of the pivot and arranged in the path'o the second arm for rendering the same'inoperative.

6. In a shuttle, a pivoted spindle, means carried thereby for releasably holding a SAUL n. LIBERTY.

lVitnesses f MARJORIE HAWES,

J. A. lull/LEE. 

